hi ,

i have installed (again) Indigo with its default Gazebo as well as Hectorquadrotor link text. I cant find the topic /cmdvel in order to send a flying command. also , i did install ardroneautonomy plus tumsimulator and the same situation . here is a list of the topics when launching roslaunch cvg_sim_gazebo ardrone_testworld.launch according to link text:

rostopic list

/aerodynamics/wrench

/altimeter

/altimeter/parameter_descriptions

/altimeter/parameter_updates

/clock

/command/motor

/command/wrench

/fix

/fix/position/parameter_descriptions

/fix/position/parameter_updates

/fix/status/parameter_descriptions

/fix/status/parameter_updates

/fix/velocity/parameter_descriptions

/fix/velocity/parameter_updates

/fix_velocity

/gazebo/link_states

/gazebo/model_states

/gazebo/parameter_descriptions

/gazebo/parameter_updates

/gazebo/setlinkstate

/gazebo/setmodelstate

/ground_truth/state

/joint_states

/magnetic

/magnetic/parameter_descriptions

/magnetic/parameter_updates

/motor_pwm

/motor_status

/pressure_height

/propulsion/wrench

/quadro/trigger

/raw_imu

/rawimu/accel/parameterdescriptions

/rawimu/accel/parameterupdates

/raw_imu/bias

/rawimu/rate/parameterdescriptions

/rawimu/rate/parameterupdates

/rawimu/yaw/parameterdescriptions

/rawimu/yaw/parameterupdates

/rosout

/rosout_agg

/sonar_height

/sonarheight/parameterdescriptions

/sonarheight/parameterupdates

/supply

/tf

/tf_static

/wind

had anyone seen such a thing before ? ps: i think in both cases i saw the same topics (hector and ardrone).

thanks in advance